Speaker
Description
In recent years, AC-coupled Low Gain Avalanche Diodes (AC-LGAD) proved to be excellent candidates for the construction of a true 4D detector: thanks to their signal sharing capabilities, AC-LGADs can achieve a space resolution better than (pitch)/√12 and a time resolution better than 30 ps in a single sensing element. Such performance, confirmed during data-taking campaigns at test beams, allows for the construction of fast and precise silicon sensors while it keeps the granularity and complexity of the readout system under control. Recently, it was proven at BNL that an AC-LGAD can be read out using a four-channel readout chip, ALTIROC, developed for the upcoming High Granularity Timing Detector upgrade of the ATLAS experiment at CERN. On the foundations laid by ALTIROC, the new readout chip EICROC is being developed at IJCLAB/Omega to tackle the physics challenges of the future Electron Ion Collider at BNL. EICROC will be custom tailored on AC-LGAD to take full advantage of its signal sharing capabilities. We will give an overview on the state of the art of AC-LGAD readout and on the challenges foreseen in the transition to an EICROC-based system.
